===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.6/5006 is trying to release lock (rcu_read_lock) at: [] __wait_on_freeing_inode+0x105/0x350 but there are no more locks to release! other info that might help us debug this: 4 locks held by syz-executor.6/5006: #0: ffff88800f8c63f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888046e3aa00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800faf2950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe32/0x12d0 #3: ffffffff85c16898 (inode_hash_lock){+.+.}-{3:3}, at: insert_inode_locked+0xf9/0x890 stack backtrace: CPU: 0 UID: 0 PID: 5006 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260116 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xca/0x120 print_unlock_imbalance_bug+0x118/0x130 lock_release+0x1ee/0x270 __wait_on_freeing_inode+0x10a/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac69932c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fac66ea8fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac69932c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007fac66ea9040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007fac66ea9000 R15: 0000000000000000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.6/5006 Modules linked in: CPU: 0 UID: 0 PID: 5006 Comm: syz-executor.6 Not tainted 6.19.0-rc5-next-20260116 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rcu_read_unlock+0x25f/0x5c0 Code: f2 02 00 00 c7 43 58 01 00 00 00 bf 09 00 00 00 e8 d6 b7 de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 8a 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 81 4d 74 03 e8 2c 5d 56 00 e9 RSP: 0018:ffff88804e1c79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88804f6d3700 RCX: ffffc9000d6f5000 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88804f6d3afc RBP: ffff88804f6d3700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804f6d3700 R13: 0000000000000001 R14: ffffffff85c0ced0 R15: ffff888046edebf0 FS: 00007fac66ea9700(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac66ea8fe8 CR3: 000000004c72f000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 filename_mkdirat+0x118/0x430 __x64_sys_mkdir+0x6e/0xd0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac69932c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fac66ea8fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fac69932c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007fac66ea9040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007fac66ea9000 R15: 0000000000000000 irq event stamp: 85 hardirqs last enabled at (85): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (84): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (80): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (78): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 loop0: detected capacity change from 0 to 4096 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 Bluetooth: unknown link type 6 Bluetooth: hci0: connection err: -111 loop0: detected capacity change from 0 to 4096 Bluetooth: Unexpected continuation frame (len 16) EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. Bluetooth: Unexpected start frame (len 10) EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. Bluetooth: unknown link type 6 Bluetooth: hci0: connection err: -111 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 loop0: detected capacity change from 0 to 4096 Bluetooth: Unexpected start frame (len 10) EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. Bluetooth: unknown link type 6 Bluetooth: hci7: connection err: -111 Bluetooth: unknown link type 6 Bluetooth: hci0: connection err: -111 EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. Bluetooth: Unexpected start frame (len 10) Bluetooth: Unexpected continuation frame (len 16) loop0: detected capacity change from 0 to 4096 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. Bluetooth: unknown link type 6 Bluetooth: hci0: connection err: -111 Bluetooth: Unexpected start frame (len 10) Bluetooth: unknown link type 6 Bluetooth: hci7: connection err: -111 Bluetooth: Unexpected start frame (len 10) random: crng reseeded on system resumption random: crng reseeded on system resumption Bluetooth: unknown link type 6 Bluetooth: hci7: connection err: -111 Bluetooth: Unexpected start frame (len 10) random: crng reseeded on system resumption random: crng reseeded on system resumption random: crng reseeded on system resumption __nla_validate_parse: 5 callbacks suppressed netlink: 52 bytes leftover after parsing attributes in process `syz-executor.6'. random: crng reseeded on system resumption netlink: 52 bytes leftover after parsing attributes in process `syz-executor.6'. random: crng reseeded on system resumption random: crng reseeded on system resumption program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO ata1.00: invalid service action 31 loop1: detected capacity change from 0 to 6 FAT-fs (loop1): Directory bread(block 6) failed Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 loop1: detected capacity change from 0 to 6 FAT-fs (loop1): Directory bread(block 6) failed Bluetooth: hci7: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci7: Injecting HCI hardware error event Bluetooth: hci7: hardware error 0x00 loop1: detected capacity change from 0 to 6 FAT-fs (loop1): Directory bread(block 6) failed kauditd_printk_skb: 36 callbacks suppressed audit: type=1326 audit(146.697:56): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5395 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f6265580b19 code=0x0 loop3: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 6 FAT-fs (loop1): Directory bread(block 6) failed loop7: detected capacity change from 0 to 264192 audit: type=1400 audit(147.066:57): avc: denied { write } for pid=5427 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 audit: type=1326 audit(147.557:58): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5395 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f6265580b19 code=0x0 set_capacity_and_notify: 1 callbacks suppressed loop7: detected capacity change from 0 to 264192 loop3: detected capacity change from 0 to 264192 audit: type=1326 audit(147.793:59): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5446 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f6265580b19 code=0x0 audit: type=1326 audit(147.809:60): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5447 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fac69933b19 code=0x0 loop3: detected capacity change from 0 to 264192 loop7: detected capacity change from 0 to 264192 audit: type=1326 audit(148.005:61): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5464 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fb235c33b19 code=0x0 Bluetooth: hci0: Opcode 0x0c03 failed: -110 Bluetooth: hci7: Opcode 0x0c03 failed: -110 audit: type=1326 audit(148.913:62): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5479 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fb235c33b19 code=0x0 audit: type=1326 audit(148.927:63): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5488 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fac69933b19 code=0x0 audit: type=1326 audit(148.934:64): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5486 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f6265580b19 code=0x0 audit: type=1326 audit(149.885:65): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5511 comm="syz-executor.6" exe="/syz-executor.6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fac69933b19 code=0x0